No Signal

Both my Apple TV 4th gen and Apple TV 4K consistently experience a loss of signal to two different Samsung TVs. I can’t even watch more than a show or two without the signal cutting out, and the TV doesn’t even recognize that it is connected to a device that is powered on. The only fix I have found is unplugging the Apple TV for a while, then plugging it back in, and the TV recognizes the signal again. I have also reset both Apple TVs multiple times. This has been the case with several HDMI cables, all with the same results across two Samsung TVs. Is this a known issue with Samsung TVs? Is there a better fix, or anything else I can do? Thanks for any help!